Wiring help with DCS layout

Ross Switches (powered separately):

1) do all 3 legs of a switch, except those going to a siding/spur, get power to them ?  Power to the track rails would normally be picked up from connecting tracks.  For non derailing see Ross website for wiring

2) are sidings/spurs insulated from the mainline, allowing control by either the 4th handle from a ZW-L, or, a toggle switch ?  Yes, they may be if you wish.

Atlas 3 rail Track:

1) should the common rail that transmits the DCS signal always be the same, i.e, the outside rail in an around the wall layout ?  The DCS signal always travels on the CENTER rail/variable voltage wire.  Lionel's command control signal travels on the Outside rails/Common wire.

2) when crossing from 1 mainline to another, should that same outside rail be the common ?  Outside rails are all common to each other on one layout.

Layout - track plan attached:

1) All track powered by ZW-L.  Layout is around the wall with a center peninsula containing a reverse loop and passing siding.  It depends on the consists you will be running.

2) How should those peninsula tracks be wired ? Should the reverse loop (outside track) be wired as one of the mainlines & the siding wired 

    like one of the other sidings ?  That would work.

Group your tracks by TIU Outputs.  (one Block of track per TIU output)

EXAMPLE:

These Run Room tracks are blocked so I could (if I wished) run 4 passenger trains and Black main and 4 passenger trains on Red main at the same time.

These track layout mains in my Run Room are fed with TIU 1 black north, TIU 2 black south, TIU 3 red north, and TIU 4 red south.  The loops are halved base on track length with TIUs in center.  North is to the left.  Theoretically each TIU output would handle 2 passenger trains.

The blue tracks are all switched with single pole toggle switches and fed with 2 TIU outputs in north and south blocks.

The Run Room uses Buss Wiring which works better with very large layouts.